Gas-burner.



No. 762,878. PATENTED JUNE-21, 1904.

R. M. BUCKNAM.

GAS BURNER.

APrLIoATIoN FILED M126. 1903.

No MODEL.

Wifi-HEEEE: l FEQ-v VJE'PTEJR:

i No. 762,878.

UNITED STATES Patented .Tune 21, 1904.

PATENT OFFICE.'

ROBERT M. BUCKNAM, OF MEDFORD, MASSACHUSETTS, ASSIGNOR. TO CENTURY LIGHT COMPANY OF AMERICA, A CORPORATION OF MASSACHUSETTS.

GAS-BURNER.

SPECIFICATION forming part of Letters Patent No. 762,878, dated J une 21, 1904,

I Application filed March 26, 1903.

To all whom it may concern:

Be it known that I, ROBERT M. BUCKNAM, a citizen ofthe United States, and a resident of Medford, in the county of Middlesex and State of Massachusetts, have invented a new and useful Improvement in Gas-Burners, of which the following is a full, clear, and exact description,

'reference being had to the accompanying drawings, forming a part of this speciiication, in explaining its nature.

The invention relates to that type of incandescent gas-burners in which a mantle is used and in which also air under pressure is fed to the gas-mixing chamber immediately below the llame-surface of the burner.

The object of the invention is to provide a simple, cheap, effective, and accessible means for controlling and adjusting its operationY and which involves means for supplying the gas to the mixing chamber, for regulating or varying such. supply, for providing a supply for a pilot-light, for providing a supply of air under pressure, for regulating the amount of said air-supply, and for cuttingoff simultaneously the supply of gas and of air without shutting oif the supply of gas for the pilot-light. All these means I have combined in one casting and a controlling-cock'7 and they are located below the burner in the supply gas pipe or main.

I will now describe the invention in detail in conjunction with the drawings forming a part of this specification, wherein- Figure l is a view of the burner, partly in vertical section and partly in elevation. Fig. 2 is a view in cross Vertical section of the valvecasing and valve. Fig. 3 is a view in vertical section upon the dotted line 3 3 of Fig. 2. Fig. 4 is a vertical section upon the dotted line 4t 4 of Fig. l and in elevation of parts back of said line. Y

The mantle is not shown in the drawings.

Referring to the drawings, A is a perforated disk of any ordinary type, forming the flame-surface of the burner. Below it are the two mixing-chambers B and B, separated from each other by the perforated diaphragm and the gauze flame-check b. The cham- Serial No. 149,632. (No model.)

yber B is formed in a tubular case or shell,

which has at its lower end a threaded section b2 to screw upon the threaded part c of the valve-casing C, which serves to hold or sustain it upright and which forms the connection between the gas-supply pipe (not shown) and it. This tubular shell has inlet-openings b3 near its lower end from the outer air, which are inclosed by fine perforated gauze 5* and surrounded by an outer chamber b5 in apetticoat b, fastened to the shell above the openings 53 and formin'g a chamber opening at its bottom b? only. (See Fig. l.)

The valve-casing C has the threaded hole.

`c8 cg above the valve and which open into the chamber B at its lower end. The port c5 is divided in the valve-plug into the two arms cw cil to permit this division of the stream of gas into two columns to take place. c", and c9 are drilled from their respective ends of the valve-casing to the central conical hole c3. The valve-casing also has a by-passage 01.2, connecting the hole o with the passage cs It also has extending 7 The passages c and which is adapted to supply a suiicient f quantity of gas not passing through the valve or .controlled by it for supporting a pilot.- light. This by-passage may be regulated in size or entirely closed by means of a screw stop-plug cl3, which screws in athreaded hole c, crossing the by-passage, and the head of which is accessible from without the casing and adapted to be turned by a screw-driver or in any other desired way. The gas-passage clmay also be adjusted in size or entirely cut olf by a screw stop-plug 015, which screws in the threaded hole c1G in the casing and enters and may extend across the said gas-passage 07. This gas screw-plug has an exposed head c, by which it may be turned.

The lateral extension c2 of the valve-case has a hole 018, which receives the end of an air-supply pipe am or a coupling connecting such a pipe with the casing. From this hole 018 there extends the air-passage 020 to the conical hole c3, and the conical valve C has the air-port 021, which serves to connect the airpassage 02 with the air-passage 022, which extends from the conical hole c3 into avhorizontal passage o23, (see Figs. 2 and 4,) extending in the lateral extension of the casing to the vertical passage c24 in the main part and in its conical extension c25, which is within the chamber B', and .so that the air-outlet 026 in said chamber is considerably above the points where the gas-supply enters the chamber and also above the air-openings b3. (See Fig. l.) This vertical air-passage c2* is for a portion of its length between the gas-passages cs cg. (See Fig. 3.) The horizontal air-passage 023 has extending into it from the end 027 of the lateral extension of the valve-casing a threaded hole 028, in which a threaded stop-plug c2 is adapted to be screwed and which serves to adjust the size of the air-passage or to shut it off completely, according as may be desired.

rlhe gas-port c5 and the air-port 021 and the gas and air passages in the valve-casing are so arranged that the turning of the valve-plug valve-casing may be regulated by the screwplugs to properly balance the respective pressures and quantities of the gas and air, and the passages may also be completely closed by said means. These devices are necessary for the effective working of the burner, and it is very advantageous to. have them arranged in and supported by an integral part like a valve-casing common to them all and whereby they are all brought closely together and conveniently located to be operated from the same position. lIt is also an advantage to -have them all located below the burner and supported by the gas-supply pipe.

Having thus fully described my invention, I claim and desire to secure by Letters Patent of the United States- 1. A valve-casing consisting of an arm Jforming means for attachment to a burner and provided with a nozzle, a second arm forming means for attachment to a gas-supply pipe, and a lateral extension forming means for attachment to an air-supply pipe, said casing having a valve-chamber therein, a passage extending from said nozzle into the lateral extension and communicating with the valvechamber, a second passage in said first-named arm communicating with said valve-chamber, and a third passage in the second-named arm communicating with the gas-supply, in combination with a main valve-plug having a passage to.provide communication between the air-supply and said first-named passage and also having a branched passage for providing communication between the gas-supply and second-named passage.

2. valve-casing consisting of an upper arm forming means for attachment to a burner and provided with a nozzle, a lower arm forming means for attachment to a gas-supply pipe, and a lateral extension forming means for attachment to an air-supply pipe, said casing having a valve-chamber therein, a central passage extending from said nozzle into the lateral extension and communicating with the valve-chamber, a plurality of annularlydisposed passages in said upper arm and communicating with said valve-chamber and a passage in the lower arm communicating with the gas-supply, in combination with a main valve-plug having a passage to provide communication between the. air -supply and the central passage Iand also having a branched passage for providing communication between the gas-supply and the annularly-disposed passages.

3. In a gas-burner of the character specitied, the valve-casing C having an extension c2, and a valvechamber' extending through said casing and extension, a coupling end c, for receiving and holding the burner, a means for attaching the valve-casing to a gas-pipe, a means for connecting an air-pipe with the extension, gas inlet and outlet passages, air inlet and outlet passages, all said passages intersecting the aforesaid valvechamber, and a main valve contained in said valve-chamber having ports to register with the various passages.

4C. In a gas-burner of the character specified, a valve-casing having therein a passage for gas and a passage for air, and a valvechamber intersecting said passages, a main valve contained in said valve-chamber having a port for opening the gas-passage and a port for opening the air-passage, means at one side of the casing for turning said main valve, a supplemental valve for regulating the gaspassage, protruding from a side of the casing below and quarteringly from the main valve, and a supplemental valve for controlling and closing the air-passage arranged to extend from the casing at a point opposite the main valve, as and for the purposes set forth.

5. In a gas-fixture of the character specitied, a valve-casing having a lateral extension and a vertical nozzle and means for attaching said casing to a support, means for receiving and supporting a burner, means for connec- IOO I ro

ISO

tion with an air-supply pipe, said casing having a inain valve, a gas-passage extending from the gas-inlet to the main Valve and from the mainvalve in a plurality of parts to gasoutlet openings on either side of the nozzle, an air-passage extending from the air-inlet to the main valve and from the main Valve to an air-outlet in the nozzle, the main Valve having a port for opening the gas-passage and dividing the gas column into a plurality of 10 columns as aforesaid, and a port for opening the air-passage as and for 'the purposes set forth. Y

ROBERT M. BUCKNAM.

In presence of- F. F. RAYMOND, 2d, SAML. SIPPERSTEIN. 

